Film-reel



F. SPAULDING. mm m1 APPLICATION FILED AUGJO. 1919.

1,385, 191 Patented July 19, 1921.

warn-:1) STATES PATENT OFFICE.

FRANKLIN SPAULDING, OI CHICAGO, ILLINOIS, ASSIGNOR TO GEQRGE W. CHRISTO- PEER, O1 CHICAGO, ILLINOIS.

FILM-REEL To all whom it may concern Be it known that I, FRANKLIN SPAULDING, a citizen of the United States, and resident of Chicago, county of Cook,.and State of Illinois, have invented certain new and useful Improvements in Film-Reels, of which the following is a specification and which are illustrated in the accompanying drawin s, forming a part thereof.

he invention relates to reels for car ing films in moving picture machines an its object is to provide for the convenient attachment to and detachment of the film from the reel.

The invention consists in a structure such as is hereinafter described and illustrated in the accompanying drawing, in which- Figure 1 is a view in erspective of the reel, some portions being I rok en away,

Fig. 2 is a sectional detail on the line 2-2 of Fig. 1, and

Fig. 3 is a detail section corresponding to Flg. 2 but showing a difi'erent form of spring.

The reel comprises a drum 10 around which a film may be wound and a pair of side plates 11, 12, which ma be conveniently secured to the drum y means of lugs, as 13, projecting laterally from the margin of the drum through suitable apertures in the plates and clenched. The side plates are centrally apertured, as indicated at 14, to receive a spindle (not shown) to form an axle for the reel.

A short section of the drum is omitted and midway of the aperture thus provided there is placed a pintle 15, the ends of which may be reduced in diameter and set through apertures in the plates 11, 12. Upon this pintle are hinged two flaps or doors 16, 17, curved to corres nd with the curvature of the drum 10, their free ends being offset inwardly, as shown at 18, to engage under the transverse marginal ortions of the drum. A spring 19 is coile about the intle 15 and its end portions 20, 21, as indicated in dotted lines at Fi 1, bear outwardly against the doors 16, 1 7, and normally hold them in closed position. That is to say, with their free edges bearing outwardly against the drum.

The end of a film may be inserted between the outer mar in of either one of the doors 16, 17 and wil 'be grip d and securely held by the action of the spring 19 whereupon the Specification of Letters Patent.

Application filed Augult so, 191

Patented July 19, 1921.

SerlalNo. 320,886.

film ma be wound upon the drum and between t e outstanding or flanged portions of the side plates 11, 12.

Two of these gripping doors are provided in order that the film may be wound upon the drum in either direction. If the reel is intended for use only in connection with films wound in one direction, one of the doors may, of course, be omitted, the corresponding portion of the drum 10, being continued approximately to the pintle 15. When it is desired to remove a film from the reel its end is easily freed by slight inward pressure upon the gripping door which is holding it. Preferably two sets of doors 16, 17, will be provided diametrically located in the drum 10 for convenience.

In the modification of Fig. 3 a fiat spring, as 22, is shown instead of the coiled sprin 19 of Fig. 2. The action of the form 0% Fig. 3 is identical with that already de scribed.

While a preferred and operative form of construction is shown and described, changes of detail may be made without dep-artlng from the scope of the invention which, in its broader aspects, comprises a drum havmg a continuous bearing surface for the film, a section of the drum periphery being inwardly movable and underlapping an adjacent section thereof and being urged outwardly by spring pressure.

I claim as my invention:

1. A film reel comprising a. drum about which a film may be wound, a section of the drum being omitted, and a spring closed gripping door located in the omitted portion, its swinging margin bearing outwardly against a transverse edge portion of the drum.

2. In a film reel, in combination, a drum having a section of its periphery omitted, a pintle crossing the aperture thus formed, a pair of doors hinged to the pintle and swinging inwardly, the free margins of the doors engaging under the transverse marginal portion of the drum when closed, and a spring normally holding the doors closed.

3. In a film reel, in combination, a drum having a transverse margin and an inwardly movable section meeting and underlapping such margin substantially throughout its extent, such movable section being urged outwardly by spring pressure.

4. In a film reel, in combination, a drum having a section omitted from its periphery, a door shaped to correspond with the IIllSS- ing section pivoted at one edge in the gep in the rum, a downwardl offset'margm on the free edge of the 001: adapted to underlap an edge of the gap in the drum, and a s rin pressing the door to closed POSI- tion' w ere y the end of a. film may be having a, section of its periphery omitted, a pintle crossing the aperture thus formed, a pair of doors downwardly offset and hinged to the pintle and swinging inwardly, the free margins of the doors engaging under the transverse marginal portion of the drum when closed, end a spring normally holding the doors closed whereby the end of e film gripped throughout its width by the offset may be gripped throughout its width by 20 10 door margin; either of the door IIIHJO'IHS.

5. In a film reel, in combination, a drum FRANKLfN SPAULDIN G. 

